You have been sent a .rar file, you double-click it, and nothing happens — or your computer asks what program to use. Unlike ZIP, RAR is not built into Windows or macOS, so normally you would go and install WinRAR or 7-Zip just to see what is inside. You do not have to. You can open a RAR file straight in your browser, with nothing installed.
Why RAR is different from ZIP
RAR is a compression format created by the makers of WinRAR. It often squeezes files a little smaller than ZIP and has some handy features, but it is proprietary — which is exactly why your operating system will not open it on its own and ZIP just works. That single fact is the reason “how do I open a RAR file” is one of the most-searched computer questions there is.
There are also two versions in the wild: the older RAR4 and the newer RAR5. Files can use either, which is why some tools open one but choke on the other. A good opener handles both.
How to open a RAR file without WinRAR
- Open the archive opener and drop your
.rarfile onto the box. - It opens the RAR right in your browser — RAR4 and RAR5 both — and lists the files inside.
- Download the files you want, or use Download all as ZIP to get everything in one go.
No WinRAR, no 7-Zip, no sign-up. It works on Windows, Mac, Chromebook and phones alike, because the whole thing runs in the browser you already have.
Your files stay on your device
Because RAR needs special handling, most people reach for the first “online RAR extractor” they find — and many of those upload your archive to their servers to open it. This tool uses a compression engine that runs inside your browser instead, so the RAR is opened on your own machine and is never uploaded. If the archive holds anything private, that matters.
Split and password-protected archives
- Files like
name.part1.rar,name.part2.rar. That is a single archive split into pieces. You need all the parts together to rebuild the contents; a single part on its own cannot be fully opened. Split multi-part archives are also the trickiest case for any in-browser tool. - Password-protected RARs. If a password was set when the RAR was made, you need that password to see the files — there is no way around it, which is the whole point of encrypting it.
- 7z files. If what you actually have is a
.7z, the same opener handles those too.
Opening a RAR only copies files out — it does not change the original archive, so you can try it without worrying about breaking anything.